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Mastering Subtraction and Addition of Fractions: A Comprehensive Overview

Explore the fundamentals of adding and subtracting fractions with this detailed guide. Designed for educators and students alike, this resource includes various exercises for practice, including real-life scenarios such as calculating leftover ribbon and food items. It provides step-by-step instructions, example problems, and challenges to enhance understanding. With sections dedicated to quizzes and error analysis, students can solidify their grasp of key concepts in fraction operations. Perfect for reinforcing classroom learning through observation, questioning, and practical application.

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Mastering Subtraction and Addition of Fractions: A Comprehensive Overview

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Presentation Transcript

  1. Week 12

  2. Observe, Question, Comment 10/ 22/2012 10/22/2012 Subtracting Factors Subtracting Factors • Do Now • 4/5 – 3/5 • 1/3 – 2/9 • 5 – 1/3 • 23 – 1/5 • 10 – 7/8 • 1 and 1/3 + 1 and ¾ + 1 and 7/12 • 31L 31R

  3. Observe, Question, Comment 10/ 22/2012 10/22/2012 Subtracting Factors Subtracting Factors • Do Now • 4/5 – 3/5= 1/5 • 1/3 – 2/9= 1/9 • 5 – 1/3= 4 2/3 • 23 – 1/5 = 22 4/5 • 10 – 7/8= 9 1/8 • 1 and 1/3 + 1 and ¾ + 1 and 7/12= 4 2/3 • 31L 31R

  4. 6o Sec Sweep

  5. Material Check

  6. Observe, Question, Comment 10/ 22/2012 10/22/2012 Subtracting Factors Subtracting Factors • NOTES! • 31L 31R

  7. Numbered Heads • 1.) 4 and 1/3 - 1 and 1/6 • 2.) 5 and ½ - 2 and 1/8 • 3.) 2 and ½ - 1 and 5/8 • 4.) 6 and ¼ - 1 and 7/8

  8. BREAK!

  9. Observe, Question, Comment 10/ 22/2012 10/22/2012 Subtracting Factors Subtracting Factors • Notes! • 31L 31R

  10. Error and Analysis

  11. Exit Slip • 1. Jordan bought thirty-seven and a half inches of ribbon to make bows for her horse's mane. After the bows were all made, she still had four and one-sixth inches of ribbon left. How many inches of ribbon did she use for the bows? • 2. 2 2/5 - 2/5 • 3. 4 ¾ - 4 2/4 • 4. 6 and 7/8 - 2 and 3/4

  12. Exit Slip • 1. Jordan bought thirty-seven and a half inches of ribbon to make bows for her horse's mane. After the bows were all made, she still had four and one-sixth inches of ribbon left. How many inches of ribbon did she use for the bows? 33 1/3 • 2. 2 2/5 - 2/5 = 2 • 3. 4 ¾ - 4 2/4= 1/4 • 4. 6 and 7/8 - 2 and ¾= 4 1/8

  13. Home work • Adding & Subtracting Fractions Homework #1-10 • *Tape this and show work in your notebook! • 1. You have ½ pumpkin pie and ¾ a lemon pie. How much pie do you have in all? ______ pies • 2. You had 3 ½ candy bars, and then you ate 1 ¾ . How much do you have left? _____ candy bars • 3. You ran 1 2/3 mile, and then you ran 3 1/6 mile. How far did you run? _____ miles • 4. You had a rope that was 7 feet long. You cut off 4/5 foot to tie a knot. How much is left? _____ feet • 5. You had 6 ½ pizzas. Your friends came over and ate 4 ¾. How much pizza is left? _____ pizza • 6. You had ½ a dollar. Then you earned 9/10 more. How much do you have now? 7. You need 7/8 cups of flour for a recipe. You have ¾ cup. How much do you still need? _____ cups • 8. You ran 4/5 mile. Your friend ran 9/10 mile. How much further did your friend run? _____ mile • 9. You’re making cookies. You used 1 ¾ cups of flour and ¾ cup of sugar. How many cups of these dry ingredients did you use in all? _____ cups • 10. You ran ½ mile on Monday, then ¾ mile on Tuesday, and 5/6 mile on Wednesday. How much did you run in those three days? _____ miles

  14. Observe, Question, Comment 10/ 24/2012 10/24/2012 Quiz Addition and Subtraction fraction Quiz Addition and Subtraction Fraction 1. 73/8 + 62/4= 2. 5 - 3/4 = 3. You have 2 ¼ strawberry pie and 4 2/16 pecan pie. How much do you have total? 4 9/10 – 3 4/5= Challenge Question: 6 ½ x 3 2/4 32 32R

  15. Observe, Question, Comment 10/ 24/2012 10/24/2012 Quiz Addition and Subtraction fraction Quiz Addition and Subtraction Fraction 1. 73/8 + 62/4= 7 7/8 2. 5 - 3/4 = 4 ¼ 3. You have 2 ¼ strawberry pie and 4 2/16 pecan pie. How much do you have total? 6 5/16 4. 4 9/10 – 3 4/5= 1 1/1 Challenge Question: 6 ½ x 3 2/4 32 32R

  16. Quiz • Clear out table tops. Three sharpened pencils and two sheets of paper. • DO NOT WRITE ON THE TEST

  17. Grade Quiz time!

  18. Homework! • PG 197 ALL

  19. Observe, Question, Comment 10/ 25/2012 10/25/2012 Multiplying Fractions Multiplying Fraction Do Now 1.) What is the LCD of 5/8 and 7/12 2.) Simplify: 24/30 3.) 2/3 + ½ 4.) 3/8 – 1/8 5.) 4/5 – 3/10 6.) 2 – 7/13 33L 33R

  20. Home work Check!

  21. Material Check

  22. Observe, Question, Comment 10/ 25/2012 10/25/2012 Multiplying Fractions Multiplying Fraction 33L 33R

  23. Whiteboard Check • 7/8 x 1/3

  24. 4 x ½

  25. 1/6 x 3

  26. 1/7 x 2/5

  27. 2 x 1/3

  28. 9 x ½

  29. 60 Sec Sweep!

  30. Observe, Question, Comment 10/ 25/2012 10/25/2012 Multiplying Fractions Multiplying Fraction 33L 33R

  31. 1. Andy carried ½ gallon of water on a hike. He drank 2/3 of the water. How much water did he drink? • A. 1 1/3 B 1/3 • C. 2/6 D, 3/3

  32. 2. Jesse has 5 and ¾ dozen eggs. How many eggs does Jesse have? • A. 34 B 24 • C. 69 D, 19

  33. 3. Perry is running 26 and 2/10 miles in the marathon. He had run ¾ of the way. How far has he run? • A. 19 13/20 B 19 3/4 • C. 9 D, 19

  34. 4. Gloria has 2 5/8 ounces of perfume. If she uses one third of it, how much will she have left? • A. 6 1/4 B 16 1/4 • C. 16 ¾ D 19 1/4

  35. 5. We have 4 ¾ pounds of apples in each bag. If we have 4 bags, how many pounds of apples do we have in all? • A. ¼ Pounds B 1 ¼ Pounds • C. 18 ¾ D 19 Pounds

  36. Individual Worksheet

  37. Pg 199 1-21 ODD

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